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Instruction manual JetCat-PRO engines, 1.7 - V12.01V
Throttle Curve
The translation function from “throttle command” to effective engine rpm can be defined via the parameter “Throttle
curve” in the Limits Menu (page: 56).
The throttle command input (from 0-100%) is derived from one of the following inputs/sources:
Servo-PWM
Analogue input
Any commands coming in via RS232 or CAN-Bus which are commanding throttle percent values.
Per default the parameter “Throttle curve” is set to a value of
3.0
which in result gives a slight logarithmic relation
between throttle command and effective engine thrust. For most applications this gives a good handling of the
engines response versus throttle command. In case a perfect linear relation between throttle position and engine
thrust is desired, the “Throttle curve” parameter can be set to a value of 2.0 (see example 2 below).
Examples:
In the following examples the transfer functions from throttle command to thrust and engine SetRpm are shown for
different settings of the “Throttle curve” parameter. The 0% thrust point is referring to the engines thrust at idle; 0%
Rpm point is referring to the idle Rpm of the engine.
Example 1; Parameter „throttle curve“ set to
3.0
(default) gives the following relation:
Example 2; Parameter „throttle curve“ set to
2.0
gives the following relation (
linear throttle to thrust curve):
